<!DOCTYPE html>
<html lang = "en" xmlns:th = "http://www.thymeleaf.org">
<head>
    <meta charset = "UTF-8">
    <title>Title</title>
</head>
<body>
<p th:text = "${msg}" style = "color: red"></p>
<form method = "get" th:action = "@{/toLogin}">
    用户名：<input type = "text" name = "username">
    密码： <input type = "password" name = "password">
    <input type = "submit">
</form>
</body>
</html>